My dream for Stellaris is for them to bring out one single, highly detailed scenario featuring humans entering the galactic community, but with fixed alien races, who have politics, a sense of history that they have been a part of, meaningful geography, and so on.
Hyperlanes is basically the only kind of FTL that seems conducive to meaningful geography in Stellaris so far, but most people don't like limiting their games to just that.
This is basically what I hope for from the modding community: a grand scenario modding project that changed much of the game but still work within its basic framework. Much like Darkest Hour and its much acclaimed Kaiserreich mod project. Stellaris have a solid base, and I hope either Paradox, or modder, or ideally both work on to improve it. We've been only some months after launch so hopefully big modding project will started out soon.
As for geography, it could be emulated by making the celestial bodies behaves differently to each other and have effect to its surrounding territory. Like how Black Hole should create a gravity well that could create a bottleneck for FTL route. Or how a dense star makes travelling within the system cumbersome. There are many possibilities of recreating geographical differences besides resorting to hyperlane travel.
All of this talk makes me realize how Stellaris is focused much of its gameplay element for military conquest. Many researchs in the game is just exist to make you able to build stronger ship and better module, or to make the governance of your empire less cumbersome. There are hardly any research that related to exploration besides faster scanning. They've made it so simple that a new space faring able to traverse near a black hole without risk (besides the aliens that lives through it).
Perhaps this happened due to the focus on customizable military ship builder. Hopefully if the upcoming patches and expansion is any indication, Paradox will focus on what Stellaris did best as of now: exploration.
Still, as far as context, the best way I can think to deliver it would be to add Civilization-style city-states that go about the galaxy doing their thing, with a handful of ways of handling them, keeping the game procedurally-generated rather than resorting to scenario-based gameplay and splitting development up.
Leviathan is kind of broaching what I'm talking about, but specifically I mean a handful of microempires that are very different from actual empires--like a society of space bugs that are slowly growing out into the galaxy, rogue AI that rose against their creators, Leviathan-style raiders, nomadic trader peoples, or quasi-dimensional beings looking for a laugh. They wouldn't be focused on winning so much as continuing their purpose, with a few methods to directly end their threat/interruptions, and benefits/penalties to their continued existence and/or destruction.
It could be the sort of thing that drives to empires into an alliance, trying to crush a nascent threat. Or the thing that two empires fight over, because it is valuable to both of them but will only ally with one. Or it could be something that an empire appreciates, only to have another empire destroy it for their own sake, sparking conflict between them. By virtue of the microempire existing, it could drive the storytelling indirectly.
I just feel that everything should go back to Stellaris' core pitch of being procedurally generated, ethos-based, and event-based. It has the potential to do interesting things beyond that of the other Paradox grand strategy titles due to the sheer scope of it all.
I'm not against procedurally generated content. But in the case of Stellaris, it could have been benefited a lot by having a fixed scenario content besides the procedurally generated one. Why? Because Stellaris is a 4X game that was designed with numerous framework design of grand strategy game. Many of grand strategy game enjoyment comes from roleplaying besides empire making and the game rewards you by doing so. Meanwhile with Stellaris, it only rewards you when you follow its 4X pattern. The big but here is that the Stellaris have numerous limitation toward military conquest that comes from its grand strategy root of Paradox. So in my eyes, it's either you try to roleplay and feels empty or you do what the game rewards you for and get frustated by its other numerous mechanic.
Other reason why I feel Stellaris would've benefited from fixed scenario is because Paradox own background. The people behind it have rich knowledge and vast research access of history. I'm confident that Paradox writer's could have made a compelling scifi political conflict scenario if they take inspiration from the history stuff they're so accustomed to. Even then, their scifi stuffs that appears up until now in Stellaris is terrific, which makes me want them to see if they ever managed to mix it with their expertise.
That being said, the upcoming Heinlein patch and Leviathan expansion is definitely a direction that I'm hoping for. More exploration, and interaction of your empire with the game which means a better experience when you tried to play as non-military empire. One thing that I particularly like in Heinlein patch is how they finally make Fallen Empire no longer
only act as an external threat. It's frustrating that the only way to have their technology is to dominate them by force.
I just hope the stuffs that coming in Heinlein and Leviathan wouldn't hindered by RNG, like many of anomaly events that obscured by the repeating one.